Gregg's Brigade
Col Cyrus A. Sugg:
3rd Tennessee: Col Calvin H. Walker
10th/30th Tennessee: Col Randall W. MacGavock (k), Ltc James J. Turner
41st Tennessee: Col Robert Farquarson
50th Tennessee: Ltc Thomas W. Beaumont
1st Tennessee Infantry Battalion: Maj Stephen H. Colms
7th Texas Infantry: Col Hiram B. Granbury

Attached units:
Bledsoe's Missouri Battery (3 guns): Cpt Hiram M. Bledsoe
Wirt Adams' Mississippi Cavalry (squadron): Cpt William S. Yerger
1st Mississippi Battalion State Troops (mounted): Cpt J. M. Hall
3rd Kentucky Mounted Infantry (joined after the battle): Col Albert P. Thompson
Wirt Adams' Mississippi Cavalry (full regiment, joined after the battle) : Col Wirt Adams
20th Mississippi Mounted Infantry (6 companies, joined after the battle)

I've done a little bit of looking into this due to the upcoming Raymond/ Vicksburg re-enactment in October, but as yet, I'm drawing a blank.